An “alien plant” fossil discovered 55 years ago just outside of an abandoned town in Utah has no relation to any currently existing or extinct species, scientists revealed in a study last month.

The spread of species beyond their native habitat is a human-made environmental change on a global scale. Among vascular plants, over 16,000 species have now permanently settled in foreign countries.

Socotra Island has been called the most alien-looking place on Earth, and with good reason. Sitting off the coast of Yemen in the Arabian Sea, it’s home to plants and landscapes found nowhere else.

Alien plants and animals cost Europe over $1.5 trillion in the last six decades, according to a new study, indicating the global economic impact of such species could be several times higher than ...

Doing away with alien plants are Lindelani Zuke, Sfundo Shezi, Crispin Hemson, Ashraf Vahed (in front), Ntokozo Bhaca, Zukisani Ntshungula and Pia Kemble. Photo: Supplied A GROUP of public-spirited ...

I spend a lot of my life trying to figure out what the hell things are. I’m out in my garden, often piddling, and I am presented with several things. Sometimes I planted those things, and I appreciate ...